Spinning apparatus with means for winding up the filaments

ABSTRACT

In each unit of a spinning apparatus filaments issue from a horizontal row of nozzles and are fed downwardly across preparation pads tangentially to a lower horizontal godet cylinder and around the lower half of the periphery thereof, then upwardly to an upper godet cylinder and thence to winding reels. In this unit the row of nozzles extends parallel rather than transversely, as heretofore, to the axes of the godet cylinders. The horizontal axis of the apparatus along which the units of the apparatus are disposed, one beside the other, extends parallel to the axis of the godet cylinders rather than at right angles thereto as heretofore.

Rot ert [451 Oct. 29, 1974 SPINNING APPARATUS WITH MEANS FOR WINDING UP THE FILAMENTS Inventor: Horst Rothert, Berlin, Germany Assignee: Karl Fischer Apparate-und Rohleitungsbau, Berlin-Borsigwalde, Germany Filed: June 2, 1969 Appl. No.: 833,859

Related U.S. Application Data Continuation of Ser. No. 585,589, Oct. H), 1966, abandoned.

Foreign Application Priority Data Oct. 27, 1965 Italy 23660/65 Aug. 2, 1966 Germany 49853 US. Cl 242/35.5 R Int. Cl B65h 54/20 Field of Search 242/18, 18 DD, 43.1, 35.5

References Cited UNITED STATES'PATENTS 1/1959 Konig 242/35.5

3,279,7ll 10/1966 Schippers et al. 242/35.5

FOREIGN PATENTS OR APPLICATIONS 926,983 5/l963 Great Britain Primary Examiner-Stanley N. Gilreath Attorney, Agent, or Firm-Spencer & Kaye [5 7 ABSTRACT In each unit of a spinning apparatus filaments issue from a horizontal row of nozzles and are fed downwardly across preparation pads tangentially to a lower horizontal godet cylinder and around the lower half of 1 Claim, 4 Drawing Figures PMfNIEHuma 1am 3.844496 I Hafiz Katha-i I fi wr Inventor:

vmmmncrzemu 3841496 sum am 4 Inventor: I H p-st W014"? PATENTEMmmn 33441498 mmnra Fig! Inventor:

- Hm: W.

Afro/nay; v

This application is a continuation of application Ser. No. 585,589, filed Oct. 10, l966, now abandoned.

The present invention relates to a spinning apparatus provided with means for winding up the filaments, such apparatus being of the type that is composed of a plurality of units mounted adjacent to each other along a horizontal machine axis, each unit comprising a spinning head having at least one horizontal row of spinning nozzles, a duct leading downwardly from said spinning head, a shaft below said duct and winding means including a plurality of godet cylinders. The filaments issuing from the downwardly facing spinning nozzles are fed downwardly through the duct which is traversed by a stream of air for solidifying the filaments which are fed downwardly through the shaft and past preparation pads in contact therewith. These pads are soaked with a suitable agent for treatment of the filaments. Below these pads the filaments pass cross rotary godet cylinders for guidance thereby. After having traversed these cylinders, the filaments are wound up by driven reels forming part of the winding means.

In prior spinning apparatus of this type the horizontal axes of the godet cylinders extend at right angles to the horizontal row orrows of the spinning nozzles and, consequently,-to the vertical plane in which the filaments issuing from the nozzles are fed downwardly past the preparation pads.

For this reason it is a requirement in the prior spinning apparatus that a guide for the filaments be provided below the preparation pads, such guide ensuring that the filaments will move in contact with the preparation pads even though most of the filaments are so diverted below the guide as to leave the afore-mentioned vertical plane. This diversion is necessary in order to enable the filaments to be evenly distributed across the godet cylinder longitudinally thereof, this cylinder being disposed at right angles to said vertical plane.

In this prior apparatus the number of the spinning nozzles that may be provided in each unit is limited to a maximum of about four nozzle bodies, each body being provided either with two orifices producing monofilaments or with a multiplicity of orifices cooperating to produce a multifilament. With this prior apparatus the set of nozzles in each unit produces either four multifilaments or eight monofilaments. Where it be attempted to increase the number of nozzles per unit beyond these limits, the angle of diversion of the filaments below the guide would become excessive.

It is the primary object of the present invention to provide an improved apparatus of the type described hereinabove in which the number of spinning nozzles in each unit can be increased considerably beyond the afore-stated limits without jeopardizing a uniform distribution of the threads across the galette cylinders. Further objects are to eliminate the guides referred to hereinabove to thereby simplify the structure of the apparatus and to attain the afore-stated primary object of the invention without rendering the apparatus more expensive and complicated.

Further objects of the present invention will appear from a detailed description of some preferred embodiments of the invention following hereinafter with reference to the accompanying drawings. It is to be understood, however, that the present invention is in no way limited or restricted to such details but is capable of numerous modifications within the scope of the appended claims.

According to one aspect of the present invention the spinning apparatus of the type composed of a plurality of adjacent units each comprising a spinning head having at least one row of spinning nozzles, a shaft leading downwardly from said row, godet cylinders mounted below said shaft for rotation about horizontal axes, reels for winding up the filaments issuing from said nozzles and traversing said godet cylinders and extending from there to said reels and means for driving said reels is characterized in that the axes of the godet cylinders extend parallel to said row of spinning nozzles, whereas heretofore it extended at right angles thereto.

Therefore, the godet cylinders are also disposed parallel to the vertical plane in which the filaments leaving the nozzles pass downwardly through the spinning shaft and past the preparation pads. As a result, the guide above referred to is dispensable because all of the filaments after having passed across the preparation pads are no longer diverted but remain substantially vertical moving tangentially into contact with and across the first godet cylinder.

Therefore, the present invention offers the advantage of enabling the capacity of the spinning unit to beincreased.

In a prior spinning apparatus of the type above referred to the spinning nozzles of the different units are disposed on a common horizontal straight line which extends parallel to the axis of the machine. The present invention is primarily applicable to a spinning apparatus of this type. In this event the axes of the godet cylinders extend parallel to the axis of the machine and parallel to the afore-mentioned straight horizontal line on which the spinning nozzles are located. It is also possible, however, to so dispose the individual spinning units one behind the other that the row or rows of the spinning nozzles of each unit extends parallel to those of the other units and transversely to the machine axis. In this event the axes of the godet cylinders are likewise disposed transversely to the machine axis.

In the spinning apparatus of the conventional type a lower godet cylinder and an upper godet cylinder are provided and each filament, after passing across the preparation pads, is first fed across the lower godet cylinder and then upwardly towards and across the upper godet cylinder and then downwardly again to the driven reels.

Since the capacity of a spinning apparatus constructed in accordance with the invention can be increased by increasing the number of nozzles in each unit, it is obviously desirable to so construct the apparatus that the number of reels can be increased accordingly. This specific object is attained by the equipment of each unit with a plurality of upper godet cylinders.

In the accompanying drawings FIG. 1 is a side view of a unit of a spinning apparatus constructed in accordance with the invention, said unit being provided but with a single upper godet cylinder,

FIG. 2 is a partial front view of the spinning apparatus, two of its units being visible in this figure,

FIG. 3 is a side view similar to that in FIG. 1 of a modified unit having a pair of upper godet cylinders and,

FIG. 4 is a partial plan view of a spinning apparatus having units of the type shown in FIG. 3, two of such units being visible in FIG. 4.

Above a tube 1 forming the spinning shaft of the unit shown in FIG. 1 a spinning head provided with a horizontal row of eight spinning nozzles is disposed, the axis of each nozzle coinciding with the vertical plane E which extends parallel to the axis A of the machine shown in FIG. 4. Where the spinning apparatus serves to produce synthetic filaments from a plastic fed to the nozzles in molten condition, the filaments after issuing from the nozzles are fed downwardly through the spinning shaft which is traversed by a horizontal stream of air which cools .the filaments rapidly causing them to solidify. For further cooling the filaments are fed downwardly through the tube 1 and pass across and into contact with preparation pads 2 mounted therebelow. These pads may be formed by rotary disks. Below these pads the filaments move tangentially on a godet cylinder 3. On their way between the nozzles and the godet cylinder 3 the filaments remain substantially vertically disposed within a plane E, the godet cylinder 3 being disposed tangentially to this plane E. The horizontal axis of the cylinder 3, therefore, extends parallel to the row of spinning nozzles. The godet cylinder is mounted for easy rotation. The filaments passing around the cylinder 3 are diverted to move upwardly within a vertical plane F into contact with an upper godet cylinder 3' which is mounted parallel to the godet cylinder 3 tangentially to the plane F. After passing around the upper godet cylinder 3 the filaments move downwardly towards the reels 4, 4 which are driven in the conventional manner by driving cylinders 5 and are adapted to be stopped by brakes 6.

As shown in FIG. 2 each unit includes an upper group of reels 4 and lower group of reels 4' disposed on a lower level, both groups being disposed on opposite sides of the vertical central plane G of the unit. Therefore, the filaments after leaving the upper godet cylinder 3' are laterally diverted, the four filaments on the left of the plane G moving towards the left with reference to FIG. 2 whereas the four filaments at the right of plane G are diverted to the right. Hence it will appear that one reel 4 or 4 respectively, is coordinated to one of the eight nozzles. As the group of reels 4 is located on a lower level than the group of reels 4, it is possible to mount the individual units in close adjacent relationship without interference of one group of reels with the other, as shown in FIG. 2.

The unit described differs from the conventional design by the disposition of the horizontal axes of the godet cylinders 3, 3' parallel rather than transversely to the plane E and by the disposition of the axes of the reels transversely rather than parallel to the plane E. Apart from this distinction the spinning apparatus embodying my invention may be constructed just as the conventional spinning apparatus. Therefore, the details of such apparatus need not be described.

The embodiment illustrated in FIGS. 1 and 2 may be modified in numerous manners. Thus, in FIG. 4 a spinning apparatus is illustrated in which each unit includes a row of sixteen nozzles. The units are so disposed adjacent to each other along the machine axis A that all of the nozzles are located on a horizontal straight line H extending parallel to the machine axis A. Moreover, this unit differs from that shown in FIGS. 1 and 2 by the provision in each unit of a second upper godet cylinder 3' on a higher level than that of the lower godet cylinder 3 and by the inclusion in each of the groups 4 and 4' of eight coaxially disposed reels. Eight of the sixteen filaments fed upwardly within the vertical plane F into contact with the upper godet cylinder 3' move along the same paths as described with reference to FIG. I. The remaining eight filaments, however, are fed from the godet cylinder 3', after having traversed this cylinder through an angle of in horizontal direction towards the godet cylinder 3" and from this second godet cylinder downwardly to the reels.

It will be noted that the second upper godet cylinder 3" is mounted for rotation about a horizontal axis extending parallel to that of the godet cylinder 3" at the same upper level.

As each filament on its way from the preparation pad 2 to the godet cylinder 3 moves within the vertical plane E without being diverted therefrom, as it occurs in the prior art spinning apparatus, each filament is subjected on its way from the spinning nozzle to the galette cylinder 3 to the same stress as the other filaments. This results in the production of filaments of uniform quality which is of great importance for producing threads composed of a multiplicity of filaments.

The embodiments described can be modified in numerous manners. Thus, the number of nozzles per unit may be increased as desired.

Moreover, each unit may be provided with two or more closely adjacent rows of nozzles extending parallel to the straight line H.

From the foregoing it will be seen that this invention is one well adapted to attain all of the ends and objects hereinabove set forth, together with other advantages which are inherent to the apparatus.

While the invention has been described in connection with various preferred embodiments thereof, it will be understood that it is capable of further modification, and this application is intended to cover any variations, uses, or adaptations of the invention following, in genera], the principles of the invention and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains, and as fall within the scope of the invention or the limits of the appended claims.

I claim:

1. In a spinning apparatus of the type composed of a plurality of adjacent units, a unit comprising a spinning head having at least one row of spinning nozzles, a shaft leading downwardly from said row, godet cylinders mounted below said shaft for rotation about horizontal axes extending parallel to said row, reels for winding up the filaments issuing from said nozzles and traversing said godet cylinders and extending from there to said reels, and means for driving said reels; said godet cylinders including one lower cylinder disposed on a lower level and at least two upper cylinders disposed on a higher level, said reels including groups of coaxial reels, each group being disposed below one of said upper godet cylinders.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION PATENT NO. 3,844,496 DATED October 29th, 1974 INVENTOR(S) Horst Rothert It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

In the heading of the patent, under [73] Assignee, change "Rohleitungsbau" to -Rohrleitungsbau-.-

Column 1, line 21, after "pass" change "cross" to -across-;

line 58, change "galette" to -godet-.'

Column 4, line 23, change "galette" to -godet-.

Signed and sealed this 6th day of May 1975.

(SEAL) Attest:

C. MARSHALL DANN RUTH C. MASON Commissioner of Patents Attesting Officer and Trademarks 

1. In a spinning apparatus of the type composed of a plurality of adjacent units, a unit comprising a spinning head having at least one row of spinning nozzles, a shaft leading downwardly from said row, godet cylinders mounted below said shaft for rotation about horizontal axes extending parallel to said row, reels for winding up the filaments issuing from said nozzles and traversing said godet cylinders and extending from there to said reels, and means for driving said reels; said godet cylinders including one lower cylinder disposed on a lower level and at least two upper cylinders disposed on a higher level, said reels including groups of coaxial reels, each group being disposed below one of said upper godet cylinders. 